US Woman Undergoes Unnecessary Hysterectomy After Biopsy Mix-Up Reveals Another Patient's Cancer

Cassandra Baxendale from the Atlanta area filed a lawsuit against Kaiser Permanente after a biopsy mix-up led to a false aggressive uterine cancer diagnosis and an unnecessary hysterectomy. In early 2025, Baxendale sought treatment at Kaiser Permanente's Southwood Medical Center in Jonesboro, Georgia, for abnormal bleeding and uterine fibroids. On March 10, she underwent an endometrial biopsy, which was sent to an external pathology lab. A week later, she was told the biopsy showed high-grade aggressive uterine cancer.

Despite a CT scan showing no signs of cancer, she was referred to a specialist and underwent extensive surgery on May 15, 2025, at age 43. The operation included removal of her uterus, cervix, fallopian tubes, and ovaries, inducing early menopause. Post-surgical pathology found no cancer in the removed tissues. Baxendale endured months of uncertainty and fear, even preparing her sons for the possibility of her death.

The turning point came in September 2025 when DNA testing revealed the cancerous biopsy sample belonged to another patient. The exact cause of the sample mix-up remains unclear. Kaiser Permanente apologized, stating Baxendale should never have undergone the surgery and that immediate measures were taken to prevent recurrence. The lawsuit, filed in Clayton County, Georgia, accuses Kaiser Permanente entities and lab personnel of negligence and seeks unspecified damages.

Similar biopsy errors have occurred in the US and Israel, sometimes leading to unnecessary surgeries. Baxendale's attorney emphasized that compensation cannot undo the physical and emotional harm caused. Privacy laws prevent disclosure of the other patient's condition or treatment delays resulting from the error.